Uber spokeswoman Rocio Paniagua told Televisa news that between 10 and 12 cars were damaged in the attack Tuesday. Some drivers were struck, but there were no reports of serious injuries.

Aside from the fleet limit, the plan seen by Reuters aims to enforce a minimum car value of 250,000 pesos (US$15,909) on Uber and companies like it, a big worry for the ride-hailing service that is coming under increasing pressure from regulators. The details of the draft are still being negotiated.